ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?
Nuclear Experiment
2011-08-08 v1
Abstract
We report on a high-statistics measurement of the basic double pionic fusion reaction over the energy region of the so-called ABC effect, a pronounced low-mass enhancement in the -invariant mass spectrum. The measurements were performed with the WASA detector setup at COSY. The data reveal the ABC effect to be associated with a Lorentzian shaped energy dependence in the integral cross section. The observables are consistent with a resonance with in both and systems. Necessary further tests of the resonance interpretation are discussed.
Keywords
Cite
@article{arxiv.1104.0123,
title = {ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?},
author = {P. Adlarson and C. Adolph and W. Augustyniak and V. Baru and M. Bashkanov and F. S. Bergmann and M. Berlowski and H. Bhatt and K. -T. Brinkmann and M. Buescher and H. Calen and H. Clement and D. Coderre and E. Czerwinski and E. Doroshkevich and C. Ekstrom and R. Engels and W. Erven and W. Eyrich and P. Fedorets and K. Foehl and K. Fransson and F. Goldenbaum and P. Goslawski and K. Grigoryev and V. Grishina and C. -O. Gullstrom and J. Hampe and C. Hanhart and L. Heijkenskj and V. Hejny and F. Hinterberger and M. Hodana and B. Hoistad and M. Jacewicz and M. Janusz and A. Jany and B. R. Jany and L. Jarczyk and J. Jaus and T. Johansson and B. Kamys and G. Kemmerling and O. Khakimova and A. Khoukaz and S. Kistryn and J. Klaja and H. Kleines and B. Klos and F. Kren and W. Krzemien and P. Kulessa and S. Kullander and A. Kupsc and K. Lalwani and B. Lorentz and A. Magiera and R. Maier and P. Marciniewski and B. Marianski and M. Mikirtychiants and P. Moskal and H. -P. Morsch and B. K. Nandi and H. Ohm and A. Passfeld and C. Pauly and E. Perez del Rio and Y. Petukhov and N. Piskunov and P. Plucinski and P. Podkopal and A. Povtoreyko and D. Prasuhn and A. Pricking and K. Pysz and T. Rausmann and C. F. Redmer and J. Ritman and A. Roy and R. J. M. Y. Ruber and Z. Rudy and S. Schadmand and A. Schmidt and W. Schroeder and T. Sefzick and V. Serdyuk and N. Shah and M. Siemaszko and R. Siudak and T. Skorodko and M. Skurzok and J. Smyrski and V. Sopov and R. Stassen and J. Stepaniak and G. Sterzenbach and H. Stockhorst and H. Stroeher and A. Szczurek and A. Taeschner and T. Tolba and A. Trzcinski and R. Varma and P. Vlasov and G. J. Wagner and W. Weglorz and A. Winnemoeller and A. Wirzba and M. Wolke and A. Wronska and P. Wuestner and P. Wurm and L. Yurev and J. Zabierowski and M. J. Zielinski and W. Zipper and J. Zlomanczuk and P. Zupranski},
journal= {arXiv preprint arXiv:1104.0123},
year = {2011}
}